| # Copyright 2023 The Bazel Authors. All rights reserved. | |
| # | |
| # Licensed under the Apache License, Version 2.0 (the "License"); | |
| # you may not use this file except in compliance with the License. | |
| # You may obtain a copy of the License at | |
| # | |
| # http://www.apache.org/licenses/LICENSE-2.0 | |
| # | |
| # Unless required by applicable law or agreed to in writing, software | |
| # distributed under the License is distributed on an "AS IS" BASIS, | |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| # See the License for the specific language governing permissions and | |
| # limitations under the License. | |
| """Wrapper for repository which call""" | |
| _binary_not_found_msg = "Unable to find the binary '{binary_name}'. Please update your PATH to include '{binary_name}'." | |
| def which_with_fail(binary_name, rctx): | |
| """Tests to see if a binary exists, and otherwise fails with a message. | |
| Args: | |
| binary_name: name of the binary to find. | |
| rctx: repository context. | |
| Returns: | |
| rctx.Path for the binary. | |
| """ | |
| binary = rctx.which(binary_name) | |
| if binary == None: | |
| fail(_binary_not_found_msg.format(binary_name = binary_name)) | |
| return binary |